/Engine/Source/Runtime/Engine/Classes/Engine/Blueprint.h
Temporary interim solution to gather asset registry data at save time only. Can depend on the target platform being saved for.
virtual void GetExtendedAssetRegistryTagsForSave ( const [ITargetPlatform](API\Developer\TargetPlatform\Interfaces\ITargetPlatform) * TargetPlatform, [TArray](API\Runtime\Core\Containers\TArray)< [FAssetRegistryTag](API\Runtime\CoreUObject\UObject\UObject\FAssetRegistryTag) > & OutTags ) const